Add plot_config to interface

freqtrade/strategy/interface.py

@@ -112,6 +112,8 @@ class IStrategy(ABC):
     dp: Optional[DataProvider] = None
     wallets: Optional[Wallets] = None
 
+    plot_config: Dict
+
     def __init__(self, config: dict) -> None:
         self.config = config
         # Dict to determine if analysis is necessary